S
M
T
W
T
F
S
26
85°
64°
27
86°
64°
28
85°
63°
29
84°
63°
30
84°
59°
31
77°
56°
1
77°
56°
2
78°
57°
3
79°
59°
4
79°
56°
5
80°
57°
6
81°
60°
7
81°
62°
8
78°
62°
9
78°
61°
10
82°
55°
11
80°
55°
12
82°
56°
13
83°
60°
14
82°
61°
15
84°
60°
16
84°
61°
17
85°
62°
18
84°
61°
19
82°
54°
20
79°
53°
21
76°
53°
22
76°
52°
23
77°
52°
24
76°
53°
25
79°
53°
26
82°
52°
27
82°
52°
28
79°
56°
29
77°
56°
30
75°
55°
31
81°
58°
1
81°
49°
2
80°
50°
3
73°
49°
4
74°
51°
5
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Great Barrington
Great Barrington's August 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 49° and 64°. The average high for August is 80° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Great Barrington. See also: September | October | November.